Ron Lesher is a retired educator with experience as the administrator of the Eisenhower Math Science Grants for the State of New Jersey aimed at upgrading the skills of K-12 teachers to mathematics and science. Has taught physics at the high school level in Maryland; taught physics for non-science majors at Washington College.

A Philatelist (stamp collector) looks at National Prohibition and the stamps that paid the tax.
Who knew that Lewis Carroll ever contemplated or wrote a draft of the third book of the Alice Trilogy? We will explore some of the hidden meanings in Alice in Wonderland, Through the Looking Glass, and Exeunt Alice.
If black holes emit no light and swallow all that surrounds them, how can we know anything about them? Come and explore what we know about black holes and how we know this.